st: column headings using estout

I am running a series of nested regression models and storing the estimates using eststo.
I would like to have a heading and subheading for each column of regression coefficients in the output from estout. I want the top heading to be the dependent variable name, and the subheading to indicate the particular nested model represented in the column (e.g., "Demographics", "Add Political Party" etc.).
Multiple dependent variables will be run and included, but the subheadings will repeat for the nested regressions of each dependent variable.
The result should look like this:
DepVar1 DepVar1 DepVar2 DepVar2
Demographics Add Pol Party Demographics Add Pol Party
IndVar1 1.2 1.1 .9 .8
IndVar2 3.2 2.8 2.5 2.2
IndVar3 .6 .3
IndVar4 4.2 3.8
Thanks for any direction you can offer.
--David
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